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Finding the Fourth Proportional to 368,675.72, 552,499.47 and 278,644.52

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Solution

The fourth proportional to 368,675.72, 552,499.47 and 278,644.52 is: 417,578.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,675.72 : 552,499.47 = 278,644.52 : x
  2. Step 2: Convert to fraction form
    368,675.72/552,499.47 = 278,644.52/x
  3. Step 3: Cross multiply
    368,675.72x = 552,499.47 × 278,644.52
  4. Step 4: Simplify right side
    368,675.72x = 153,950,946,855.91
  5. Step 5: Solve for x
    x = 153,950,946,855.91/368,675.72
  6. Step 6: Final answer
    x = 417,578.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.